Preserve-can.



PATENTED JULY 18, 1905. H. B5HM.

PEEsEEvE CAN.

APPLICATION FILED JUNE 27.1904.

%p'nesses UNITED STATES Patented July 18, 1905.

PATENT OFFICE.

HERMANN BCHM, OF BERLIN, GERMANY, ASSIGNORTO FELIX HECHT, OF MANNHEIM,GERMANY.

PRESERVE-CAN.

SPECIFICATION forming part of Letters Patent No. 794,848, dated July 18,1905.

Application filed June 27,1904. SerialNo. 214,382. Y

to mix generate the heat necessary for warming the preserve. Themanufacture of cans of this description, however, is attended withdifliculties, more especially in view of the character of theconstruction demanding troublesome operations and in particular muchsoldering. This is frequently not effected with the requisite care onthe part of the workman, so that the lime-chamber is not air and watertight, the consequence being that in making use of the heatingarrangement the desired effect is not secured.

1n the preserve-can forming the subject of the present invention allthese difficulties are overcome.

The essential feature of the invention is that the chamber whichconstitutes the water-spaceis formed by a special tray, the bottom ofwhich constitutes the partition between water and lime chambers, and theedge of the said tray is secured by being turned over or seamed. By theemployment of a separate tray in this manner to form the water-space aspecially-soldered seam for the partition is obviated and themanufacture of the entire can essentially simplified.

The invention is illustrated in the drawings, in which my improvedconstruction is shown, and it is assumed that heating is effected by theunion of lime and water, although it must be understood that instead ofthese any other suitable chemicals may be employed.

Figure 1 is an elevation of the actual preserve-can without theinclosing chambers. Fig. 2'is a vertical section of the inclosingcasing. Fig. 3 is a like view of the inverted tray. Fig. 4 is the coverfor the same. Fig. 5 is a vertical section of all the parts assembled toform the complete receptacle, the actual preserve-can being shown inelevation.

(L is the preserve-can proper, which may be opened in well-known mannerby stripping off the soldered band at. On this can there is secured inany suitable manner an annular flange 0, which when the several parts ofthe receptacle are assembled is beaded or turned over, with the flange pof the casing b, Fig. 2, to form a seam, as shown in Fig. 5.- Theannular chamber 1 thus formed is then filled with lime and the tray 0*,Fig. 3, inserted, the bottom 6 of which tray constitutes the partitionbetween the chambers q and 0. The space 0 is now filled with water andthe cover /2 applied, whereupon the edges pp p are seamed or beadedtogether to form a thoroughly-secure joint. The preserve-can thus closedis now ready for transit and use.

If the contents of the can are to be heated, it is only necessary topierce a hole through the cover It and the bottom 6 of the tray, asindicated by the arrow as, Fig. 5. The water will then flow into thechamber Q and will slake the lime contained therein, whereby veryconsiderable heat will be generated and transmitted to the contents ofthe can a. After the preserve has thus been sufficiently heated the cana may be opened by stripping off the band m.

By piercing the walls A d, as shown by the arrow 0, the water is allowedaccess to the lime and the contents of the can will be heated,

whereupon the band m should be stripped off and the water and limereceptacles together lifted off, so as to expose the preserve in theshallow receptacle a.

For the purpose of preventing as far as possible the radiation of theheat generated in the interior of the can by the contact of the lime andwater an insulating-jacket may be provided.

That portion of the central food-chamber extending above thechemical-chamber forms a neck which carries a band, by means of whichready access may be had to the interior of the food-chamber. Thefood-chamber is opened by unwinding the said band, which releases thetop.

Having now particularly described and ascertained the nature of my saidinvention, what I claim as new, and desire to secure by Letters Patent,is

1. The combination in a food-heating can, of an inner food-chamber, anouter chamber adapted to contain a chemical such as quicklime,saidfood-chamber extending beyond said chemical-chamber, a lowerliquid-containing chamber arranged in close contact with thechemical-heating chamber, and in such manner that an instrument mayperforate the outer wall of the liquid-chamber and the dividingwall ofthe chemical-heating chamber whereby communication is had between saidchambers, substantially as described.

former chemical-chamber, and the cover 1L under said latterchemical-chamber, said walls of the chemical-chamber 7), said trayforming said chemical-chamber c and said cover it being all seamedtogether.

3. A preserve-can comprising a preservechamber a, a surroundingchemical-chamber Z) havingits top secured to said preserve-chamberbetween the top and bottom of said preserve-chamber whereby saidpreserve-chamber extends above the top of said chemicalchamber to form aneck, a lower chemicalchamber 0 under said preserve-chamber and a coverh for said lower chemical-chamber, the walls of said chemical-chambersand said cover h being seamed together.

In witness whereof I have hereunto signed my name, this 14th day ofJune, 1904, in the presence of two subscribing witnesses.

HERMANN BOHM.

Witnesses:

HENRY HAsPnR, WOLDEMAR HAUPT.

